69 	return container_of(link->mbox, struct bcm2835_mbox, controller);  in bcm2835_link_mbox()
74 	struct bcm2835_mbox *mbox = dev_id;  in bcm2835_mbox_irq()  local
75 	struct device *dev = mbox->controller.dev;  in bcm2835_mbox_irq()
76 	struct mbox_chan *link = &mbox->controller.chans[0];  in bcm2835_mbox_irq()
78 	while (!(readl(mbox->regs + MAIL0_STA) & ARM_MS_EMPTY)) {  in bcm2835_mbox_irq()
79 		u32 msg = readl(mbox->regs + MAIL0_RD);  in bcm2835_mbox_irq()
88 	struct bcm2835_mbox *mbox = bcm2835_link_mbox(link);  in bcm2835_send_data()  local
91 	spin_lock(&mbox->lock);  in bcm2835_send_data()
92 	writel(msg, mbox->regs + MAIL1_WRT);  in bcm2835_send_data()
93 	dev_dbg(mbox->controller.dev, "Request 0x%08X\n", msg);  in bcm2835_send_data()
94 	spin_unlock(&mbox->lock);  in bcm2835_send_data()
100 	struct bcm2835_mbox *mbox = bcm2835_link_mbox(link);  in bcm2835_startup()  local
103 	writel(ARM_MC_IHAVEDATAIRQEN, mbox->regs + MAIL0_CNF);  in bcm2835_startup()
110 	struct bcm2835_mbox *mbox = bcm2835_link_mbox(link);  in bcm2835_shutdown()  local
112 	writel(0, mbox->regs + MAIL0_CNF);  in bcm2835_shutdown()
117 	struct bcm2835_mbox *mbox = bcm2835_link_mbox(link);  in bcm2835_last_tx_done()  local
120 	spin_lock(&mbox->lock);  in bcm2835_last_tx_done()
121 	ret = !(readl(mbox->regs + MAIL1_STA) & ARM_MS_FULL);  in bcm2835_last_tx_done()
122 	spin_unlock(&mbox->lock);  in bcm2835_last_tx_done()
133 static struct mbox_chan *bcm2835_mbox_index_xlate(struct mbox_controller *mbox,  in bcm2835_mbox_index_xlate()  argument
139 	return &mbox->chans[0];  in bcm2835_mbox_index_xlate()
147 	struct bcm2835_mbox *mbox;  in bcm2835_mbox_probe()  local
149 	mbox = devm_kzalloc(dev, sizeof(*mbox), GFP_KERNEL);  in bcm2835_mbox_probe()
150 	if (mbox == NULL)  in bcm2835_mbox_probe()
152 	spin_lock_init(&mbox->lock);  in bcm2835_mbox_probe()
155 			       bcm2835_mbox_irq, 0, dev_name(dev), mbox);  in bcm2835_mbox_probe()
163 	mbox->regs = devm_ioremap_resource(&pdev->dev, iomem);  in bcm2835_mbox_probe()
164 	if (IS_ERR(mbox->regs)) {  in bcm2835_mbox_probe()
165 		ret = PTR_ERR(mbox->regs);  in bcm2835_mbox_probe()
170 	mbox->controller.txdone_poll = true;  in bcm2835_mbox_probe()
171 	mbox->controller.txpoll_period = 5;  in bcm2835_mbox_probe()
172 	mbox->controller.ops = &bcm2835_mbox_chan_ops;  in bcm2835_mbox_probe()
173 	mbox->controller.of_xlate = &bcm2835_mbox_index_xlate;  in bcm2835_mbox_probe()
174 	mbox->controller.dev = dev;  in bcm2835_mbox_probe()
175 	mbox->controller.num_chans = 1;  in bcm2835_mbox_probe()
176 	mbox->controller.chans = devm_kzalloc(dev,  in bcm2835_mbox_probe()
177 		sizeof(*mbox->controller.chans), GFP_KERNEL);  in bcm2835_mbox_probe()
178 	if (!mbox->controller.chans)  in bcm2835_mbox_probe()
181 	ret = mbox_controller_register(&mbox->controller);  in bcm2835_mbox_probe()
185 	platform_set_drvdata(pdev, mbox);  in bcm2835_mbox_probe()
193 	struct bcm2835_mbox *mbox = platform_get_drvdata(pdev);  in bcm2835_mbox_remove()  local
194 	mbox_controller_unregister(&mbox->controller);  in bcm2835_mbox_remove()